<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app"></div>
</body>
<script>
    //构造函数绑定
    function Person(head, foot, hand){
        this.foot = foot
        this.head = head
        this.hand = hand
    }
    function Student(id, name, head, foot, hand){
        //Person.call(this, head, foot, hand)
    Person.apply(this, [head, foot, hand])
    this.id = id
    this.name = name
    this.show = function() {
      return "{hand=" + this.hand + ",id=" + this.id + ",name=" + this.name + ",foot=" + this.foot + ",head=" + this.head + "}"
    }
    }
    let stu = new Student(1, "tom", 1, 2, 2)
  app.innerHTML = stu.show()

</script>
</html>